Freedom of the press in Thailand fluctuates greatly, depending upon the government in each period. Newspapers have been suppressed since the monarchy political system was changed to democracy in 1932. Several kinds of suppression were imposed in each period which showed that the country, in reality, was under a military dictatorship. This study is a summary of the government control of the press since 1932. The study was divided into five chapters, including the introduction, background of the press and politics in Thailand, style and characteristics of Thai newspapers, government control from 1932 to 1963, and the conclusions and recommendations for further study.